Frederick Douglass's statement, "There were horses and men, cattle and women, pigs and children, all holding the same rank in the scale of being," contrasts with the idea in the Declaration of Independence that "all men are created equal." Douglass is describing a scene of dehumanization and inequality, highlighting the stark contrast between the principles of equality outlined in the Declaration and the harsh reality of slavery where individuals, regardless of age or gender, were treated as commodities. This contrast emphasizes the hypocrisy and injustice embedded in the institution of slavery as it existed during Douglass's time.